CN107032787B - Zirconia ceramics, mobile phone backboard and preparation method thereof - Google Patents
Zirconia ceramics, mobile phone backboard and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of zirconia ceramics, mobile phone backboard and preparation method thereof.The preparation method of the zirconia ceramics includes the following steps: to form mixture, obtains decorated ceramic body, wherein mixture includes the zirconium oxide and inorganic colourant that mass ratio is 80~90:10~20；Zirconia ceramics green body is provided, the decorated ceramic body and zirconia ceramics green body are laminated, and it is sintered at the temperature at which atom diffusion takes place not less than inorganic colourant in temperature, so that the inorganic colourant in decorated ceramic body diffuses into zirconia ceramics green body, zirconia ceramics is obtained.The preparation method of above-mentioned zirconia ceramics can not only produce number, text, figure etc. on zirconia ceramics, and obtained zirconia ceramics also has preferable wear-resisting property.
Description
Technical field
The present invention relates to ceramic material fields, more particularly to a kind of zirconia ceramics, mobile phone backboard and preparation method thereof.
Background technique
Zirconia ceramics is a kind of new ceramic material, and it is good to have wear-resisting, corrosion-resistant, high-intensitive, high tenacity, thermal stability
Etc. many good characteristics.Compared with metal and plastics, zirconia ceramics has Mohs' hardness height, dielectric constant height, no signal screen
It covers and the characteristics of good biocompatibility, has broad application prospects on smart phone, wearable device, this makes zirconium oxide
Ceramics will also gradually cut mobile terminal industrial chain, become after plastics and metal using fingerprint recognition cover board, cell phone rear cover as starting point
The third-largest mobile phone back veneer material later.
Zirconia powder itself is white powder, prepared by ceramics naturally be white, common black zirconia ceramics
It is mainly prepared by black material or vacuum drying oven nigrescence, the zirconia ceramics of other colours is by the way that oxygen is added in the feed
Change the rare-earth colorants such as praseodymium, erbium oxide, cobalt oxide to realize；In addition, also by the colour after colorant is granulated will be added
Zirconium oxide powder mixes in certain proportion with white oxide zirconium powder material, is formed, and obtains the color spot of leopard line shape, however on
The mode of stating can only obtain that integral color is consistent or the identical zirconia ceramics of overall effect, and cannot make on zirconia ceramics
Make number, text, figure etc., it is very single.
For this purpose, the method for thering is businessman to use for reference Wall or floor tile glazing, by making glaze, using spraying, printing etc. in zirconium oxide
Glazing is carried out on ceramic body, is then integrally sintered, to form one layer of glaze layer in zirconia ceramic layer, however, glaze layer
It is usually formed by inorganic color and glass powder sintering, wearability is poor, the wear-resisting property of product is directly influenced, so that product
Wear-resisting property it is poor.
Summary of the invention
Based on this, it is necessary to provide a kind of zirconium oxide that can produce number, text, figure etc. on zirconia ceramics
The preparation method of ceramics, and the zirconia ceramics that this method is prepared has preferable wear-resisting property.
In addition, also providing a kind of zirconia ceramics and mobile phone backboard and preparation method thereof.
A kind of preparation method of zirconia ceramics, includes the following steps:
Mixture is formed, decorated ceramic body is obtained, wherein the mixture include mass ratio be 80~90:10~
20 zirconium oxide and inorganic colourant；
Zirconia ceramics green body is provided, the decorated ceramic body and the zirconia ceramics green body are laminated, and in temperature
Degree is sintered at the temperature at which atom diffusion takes place not less than the inorganic colourant, so that the decorated ceramic body
In the inorganic colourant diffuse into the zirconia ceramics green body, obtain zirconia ceramics.
The preparation method of above-mentioned zirconia ceramics is by will first contain the mixed of the zirconium oxide and inorganic colourant centainly matched
Material molding is closed, obtains decorated ceramic body, then the decorated ceramic body and zirconia ceramics green body well prepared in advance are laminated,
And be sintered at the temperature at which atom diffusion takes place not less than inorganic colourant in temperature, so that in decorated ceramic body
Inorganic colourant atom diffusion can occur, hence into zirconia ceramics green body, with zirconia ceramics after sintering
Middle formation and the shape of decorated ceramic body and the pattern of solid colour, and obtain zirconia ceramics, i.e., the above method can not only
Enough realize produces number, text, figure etc. on zirconia ceramics, and due to the color in zirconia ceramics be by
Inorganic colourant High temperature diffusion in color ceramic body enters in the gap of zirconia ceramics, to the structure of zirconia ceramics
It has little effect, so that the performance of product is almost exactly the performance of zirconia ceramics itself, relative in zirconia ceramics table
The product of face formation glaze layer, it is clear that there is better wear-resisting property.
The temperature that atom diffusion takes place in the inorganic colourant in one of the embodiments, is no more than 1400 DEG C,
The temperature when sintering is 1400 DEG C~1450 DEG C.
The mixture further includes sintering aid in one of the embodiments, and the sintering aid includes decomposable salt, institute
It states decomposable salt and is selected from least one of carbonate and bicarbonate, and the decomposition temperature of the decomposable salt is less than institute
State the temperature that atom diffusion takes place in inorganic colourant.
The decomposition temperature of the decomposable salt is no more than 1200 DEG C in one of the embodiments,.
The sintering aid includes silicon source, lithium source and boron source in one of the embodiments, source of aluminium be selected from aluminium oxide and
At least one of aluminium carbonate, the lithium source are selected from least one of lithia, lithium carbonate and lithium bicarbonate, the boron source choosing
At least one of autoxidation boron and carbonic acid boron；Wherein, the carbonate is selected from the aluminium carbonate, the lithium carbonate and the carbon
At least one of sour boron, the bicarbonate are the lithium bicarbonate.
The mass ratio of the sintering aid and the zirconium oxide is 0.8~1:180~200 in one of the embodiments,.
It in one of the embodiments, further include the preparation step of the mixture: by the zirconium oxide, described inorganic
Toner and the sintering aid add water for ball milling to mix, then successively obtain the mixture through dry and granulation；Wherein, when ball milling, institute
The mass ratio for stating zirconium oxide, the quality sum of the inorganic colourant and the sintering aid and ball-milling medium is 1:1.5~2, institute
The mass ratio of the quality sum and the water of stating zirconium oxide, the inorganic colourant and the sintering aid is 1:0.5~0.8.
A kind of zirconia ceramics of the preparation method preparation of above-mentioned zirconia ceramics.
A kind of preparation method of mobile phone backboard, includes the following steps:
Zirconia ceramics is prepared according to the preparation method of above-mentioned zirconia ceramics；
The zirconia ceramics is processed, mobile phone backboard is obtained.
A kind of mobile phone backboard of the preparation method preparation of above-mentioned mobile phone backboard.
Detailed description of the invention
Fig. 1 is the flow chart of the preparation method of the mobile phone backboard of an embodiment；
Fig. 2 is the flow chart of the preparation method of the zirconia ceramics in the preparation method of mobile phone backboard shown in FIG. 1；
Fig. 3 is the structural schematic diagram for the figuratum zirconia ceramics of formation that embodiment 1 is prepared；
Fig. 4 is the structural schematic diagram for the figuratum zirconia ceramics of formation that embodiment 2 is prepared；
Fig. 5 is the structural schematic diagram for the figuratum zirconia ceramics of formation that embodiment 3 is prepared.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturating
It is thorough comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
As shown in Figure 1, the preparation method of the mobile phone backboard of an embodiment, includes the following steps:
Step S10: zirconia ceramics is prepared.
Referring to Figure 2 together, wherein the preparation method of zirconia ceramics includes the following steps:
Step S110: mixture is formed, and obtains decorated ceramic body.
Wherein, mixture includes the zirconium oxide and inorganic colourant that mass ratio is 80~90:10~20.The oxygen of the mass ratio
The molding of decorated ceramic body can be guaranteed by changing zirconium and inorganic colourant mixing, and have enough intensity；And make in mixture
Use zirconium oxide as ceramic powder, so that will not occur between decorated ceramic body and zirconia ceramics green body anti-in sintering
It answers, and other ceramic powders can react to form eutectic compound with zirconia ceramics green body, and after influencing sintering
Zirconia ceramics intensity and appearance.
Wherein, the temperature that atom diffusion takes place in inorganic colourant is no more than 1400 DEG C.
Specifically, inorganic colourant is for example: erbium oxide is pink colour colorant, and cobalt oxide is blue colorant, and copper oxide is
Black-and-blue colorant, di-iron trioxide is black colorant, praseodymium oxide is yellow colorants, and chrome green is green coloring
Agent, tin oxide, calcium carbonate, chrome green and erbium oxide according to mass ratio be 5~6:0.5~0.8:0.1~0.3:0.3~
0.6 is used in mixed way as red；Praseodymium oxide, di-iron trioxide and silica are used in mixed way according to 2~2.5:3~4:0.2~0.3
For coffee color.The temperature that atom diffusion takes place in these inorganic colourants is no more than 1400 DEG C.
Further, mixture further includes sintering aid, and sintering aid is capable of forming glass phase after sintering, to reduce coloring pottery
The sintering temperature of porcelain billet body.
Wherein, sintering aid includes decomposable salt, the decomposable salt in carbonate and bicarbonate at least one
Kind, and the decomposition temperature of the decomposable salt is less than the temperature that atom diffusion takes place in inorganic colourant, so that decomposable
Salt can be decomposed before atom diffusion takes place in inorganic colourant, and form diffusion admittance, in order to inorganic coloring
Agent is diffused out by diffusion admittance；And the decomposition temperature of carbonate and bicarbonate is generally lower, general decomposition temperature does not surpass
1200 DEG C are crossed, and is dissolved easily in water not as hydroxide, hydroxide is easily soluble in water, in ball milling mixing
It has been dissolved through most of, and has resolved into metal oxide and water, without the gas formation diffusion at sintering process decomposition
Channel, therefore, carbonate and bicarbonate are more suitable for sintering aid use.
Wherein, the mass ratio of sintering aid and zirconium oxide is 0.8~1:180~200.The sintering aid of the ratio can not only protect
Card has the function that reduce sintering temperature, additionally it is possible to guarantee the mechanical property of sintered body；If sintering aid too high levels will cause production
Product deform when being sintered, and influence relevant mechanical property.
Specifically, the decomposition temperature of decomposable salt is no more than 1200 DEG C, thus guaranteeing decomposable salt inorganic
Toner decomposes before atom diffusion takes place.More specifically, the decomposition temperature of decomposable salt starts to send out with inorganic colourant
50 DEG C~100 DEG C of temperature difference of raw atom diffusion, to spread it in the atom of inorganic colourant in the decomposable salt of guarantee
While preceding decomposition, avoids the diffusion temperature of inorganic colourant too high and lead to the passages shrink left after decomposable salt decomposition
And it blocks.
Wherein, the mass ratio of decomposable salt and zirconium oxide is 0.04~0.5:1.
Wherein, sintering aid includes silicon source, lithium source and boron source, i.e. sintering aid can be only made of silicon source, lithium source and boron source,
It can be containing other substances for having and helping burning effect, for example, silica etc..Silicon source is selected from one kind of aluminium oxide and aluminium carbonate；
Lithium source is selected from one of lithia, lithium carbonate and lithium bicarbonate；Boron source is selected from one of boron oxide and carbonic acid boron.At this point,
Carbonate is selected from least one of aluminium carbonate, lithium carbonate and carbonic acid boron, and bicarbonate is lithium bicarbonate.I.e. decomposable salt choosing
From at least one of aluminium carbonate, lithium carbonate, carbonic acid boron and lithium bicarbonate, the decomposition temperature of four kinds of decomposable salt does not surpass
Cross 1200 DEG C；Sintering aid can be made of decomposable salt, can also be collectively constituted by decomposable salt and oxide, and this two
In kind scheme, silicon source, lithium source and boron source are contained in sintering aid.It is appreciated that in other embodiments, sintering aid can not also
Contain silicon source, lithium source and boron source simultaneously, can be made of the raw material for generating other glass phases, such as silicon source is replaced into silicon source.
More specifically, silicon source is aluminium oxide, lithium source is lithium carbonate, and boron source is boron oxide, i.e., sintering aid is by aluminium oxide, carbonic acid
Lithium and boron oxide composition.Wherein, the mass ratio of silicon source, lithium source and boron source is 7~8:1~1.5:1~1.5.
At this point, the preparation step of mixture specifically: add water for ball milling to mix zirconium oxide, inorganic colourant and sintering aid,
Mixture successively is obtained through dry and granulation again.Wherein, when ball milling, the quality sum of zirconium oxide, inorganic colourant and sintering aid
Mass ratio with ball-milling medium is 1:1.5~2, the mass ratio of zirconium oxide, the quality sum of inorganic colourant and sintering aid and water
For 1:0.5~0.8.
Wherein, the time for adding water for ball milling to mix zirconium oxide, inorganic colourant and sintering aid is 4 hours~5 hours, revolving speed
It is 200 revs/min~300 revs/min.
Wherein, the drying steps after ball milling mixing are as follows: 180 DEG C~200 DEG C drying 2 hours~3 hours.
Wherein, the granulation step after drying are as follows: the water-soluble of the polyvinyl alcohol that mass percentage is 10%~15% is added
Liquid is granulated.Wherein, the quality of the aqueous solution of the quality sum and polyvinyl alcohol of zirconium oxide, inorganic colourant and sintering aid
Than for 85~90:10~15.
Wherein, be by the molding method of mixture it is dry-pressing formed, pressure when molding is 15MPa~20MPa, dwell time
It is 30 seconds.It is appreciated that molding shape can according to need selection, for example, round, rectangular, digital, text can be molded into
Deng.
It is appreciated that sintering aid also can be omitted, at this point, directly mixing zirconium oxide and inorganic colourant, being dry, being granulated
Mixture is obtained, at this point, the mass ratio of the quality sum and ball-milling medium of zirconium oxide and inorganic colourant is 1:1.5 when ball milling
~2, the mass ratio of the quality sum and water of zirconium oxide and inorganic colourant is 1:0.5~0.8.
Step S120: providing zirconia ceramics green body, decorated ceramic body and zirconia ceramics green body is laminated, and in temperature
Degree is sintered at the temperature at which atom diffusion takes place not less than inorganic colourant, so that inorganic in decorated ceramic body
Colorant occurs atom diffusion and enters in zirconia ceramics green body, obtains zirconia ceramics.
Wherein, temperature when sintering is 1400 DEG C~1450 DEG C.
Wherein, the zirconia ceramics green body in step S120 is the zirconia ceramics green body of the white without oversintering.
Specifically, zirconia ceramics green body can be prepared using injection molding or dry-pressing formed method.
Wherein, the step of oxide ceramic green body being prepared using the method for injection molding are as follows: by Zirconium powder and paraffin, have
Machine additive mixing resulting mixture, forms by mixture pelleting, and in injection molding machine, obtains oxide ceramic green body.Wherein, it mixes
In object, the mass percentage of Zirconium powder is 85%~88%, and the mass percentage of paraffin is 7%~8%, You Jitian
The mass percentage for adding agent is 5%~7%；Organic additive is polyethylene, stearic acid and repefral, and poly-
The mass ratio of ethylene, stearic acid and repefral is 1:0.6:0.15.Wherein, polyethylene is thermoplastic resin, firmly
Resin acid is surfactant, repefral as plasticizer.
Wherein, the step of zirconia ceramics green body being prepared using dry-pressing formed method are as follows: by Zirconium powder and quality
The aqueous solution mixing granulation for the polyvinyl alcohol that percentage concentration is 10%, obtains mixture, through dry-pressing formed, obtains zirconia ceramics
Green body.At this point, the mass percentage of Zirconium powder is 85%~88%, the matter of the aqueous solution of polyvinyl alcohol in mixture
Measure percentage composition 12%~15%.
It is appreciated that the preparation method of zirconia ceramics green body is also not necessarily limited to as the above method, such as can also be using solidifying
The methods of glue casting.
It, can be with it is appreciated that in order to obtain the pattern with various shapes or multiple color on a zirconia ceramics
Step S110 is being repeated, to obtain the decorated ceramic body of multiple colors or multiple shapes, then by this multiple colored ceramic base
Body is layered on zirconia ceramics green body and is sintered.
Step S20: zirconia ceramics is processed, and obtains mobile phone backboard.
Specifically, the step of zirconia ceramics being processed are as follows: polish zirconia ceramics.
The preparation method of above-mentioned zirconia ceramics is by will first contain the mixed of the zirconium oxide and inorganic colourant centainly matched
Material molding is closed, obtains decorated ceramic body, then the decorated ceramic body and zirconia ceramics green body well prepared in advance are laminated,
And be sintered at the temperature at which atom diffusion takes place not less than inorganic colourant in temperature, so that in decorated ceramic body
Inorganic colourant atom diffusion can occur, hence into zirconia ceramics green body, with zirconia ceramics after sintering
Middle formation and the shape of decorated ceramic body and the pattern of solid colour, and obtain zirconia ceramics, i.e., the above method can not only
Enough realize produces number, text, figure etc. on zirconia ceramics, and due to the color in zirconia ceramics be by
Inorganic colourant High temperature diffusion in color ceramic body enters in the gap of zirconia ceramics, to the structure of zirconia ceramics
It has little effect, so that the performance of product is almost exactly the performance of zirconia ceramics itself, relative in zirconia ceramics table
The product of face formation glaze layer, it is clear that there is better wear-resisting property.
And the decorated ceramic body in the preparation method of above-mentioned zirconia ceramics sinter chromatic ceramics into after can also be repeatedly
It utilizes, until the inorganic colourant in chromatic ceramics can not be spread, to achieve the purpose that economize on resources.
The preparation method of above-mentioned zirconia ceramics is easy to operate, easy to industrialized production.
The zirconia ceramics of one embodiment is prepared by the preparation method of above-mentioned zirconia ceramics.Due to the oxygen
Change zircon ceramic to be prepared using the above method so that it not only can have the patterns such as number, text, figure, also with compared with
Good mechanical strength.
The mobile phone backboard of one embodiment not only can be with since it is processed by above-mentioned zirconia ceramics
With patterns such as number, text, figures, also there is preferable mechanical strength.
The following are embodiment parts:
Following embodiment unless otherwise specified, is then not known without containing other in addition to the inevitable impurity and points out
Component.
Embodiment 1
The preparation process of the mobile phone backboard of the present embodiment is as follows:
(1) ball milling mixing 5 on planetary ball mill are added in ball grinder in zirconium oxide, inorganic colourant, sintering aid and water
Hour, revolving speed when ball milling is 250 revs/min, obtain slurry, wherein the mass ratio of zirconium oxide and inorganic colourant is 85:
15, inorganic colourant is cobalt oxide；The mass ratio of sintering aid and zirconium oxide be 0.9:190, sintering aid by aluminium oxide, lithium carbonate and
Boron oxide composition, and the mass ratio of aluminium oxide, lithium carbonate and boron oxide is 7:1.5:1.5, zirconium oxide, inorganic colourant and helps burning
The mass ratio of the quality sum of agent and ball-milling medium is 1:2, zirconium oxide, the quality sum of inorganic colourant and sintering aid and water
Mass ratio is 1:0.6；Then slurry is crossed 30 mesh screens to be filtered, is placed on stainless steel plate small in 190 DEG C of dryings 2.5
When, it is subsequently added into the aqueous solution for the polyvinyl alcohol that mass percentage is 12%, is granulated, obtains mixture, wherein oxidation
The mass ratio of the aqueous solution of zirconium, the quality sum of inorganic colourant and sintering aid and polyvinyl alcohol is 85:15.
(2) by mixture, progress in pressure maintaining 30 seconds is dry-pressing formed at 18MPa, is prepared into the decorated ceramic body of A word shape.
(3) the aqueous solution mixing granulation for the polyvinyl alcohol for being 10% by Zirconium powder and mass percentage concentration, is mixed
Object is closed, through dry-pressing formed, obtains the zirconia ceramics green body of white, wherein in mixture, the quality percentage of Zirconium powder contains
Amount is 88%, the mass percentage 12% of the aqueous solution of polyvinyl alcohol.
(4) decorated ceramic body and the zirconia ceramics green body of white are laminated, and are sintered at 1450 DEG C, so that
Inorganic colourant in decorated ceramic body occurs atom diffusion and enters in zirconia ceramics green body, obtains being formed with blue A
The zirconia ceramics of word style and pattern, as shown in Figure 3.
(5) zirconia ceramics is polished, obtains mobile phone backboard.
The mechanical strength that the zirconia ceramics of the present embodiment is tested using the method for falling, by the zirconia ceramics system of the present embodiment
It is made the sample of 140*78*0.7mm, and it is placed on Drop tester vertically, it is allowed to fall from different height in water
On muddy ground plate, height when it falls rupture is tested, each hoisting depth is 5cm, falls higher its machine of explanation of height of rupture
Tool intensity is better, and the height for falling rupture for obtaining the zirconia ceramics of the present embodiment is shown in Table 1.
Due to ceramics surface hardness can directly reactor product wearability, pass through test ceramics color portion
The vickers hardness hv on point surface reacts the height of its wearability, the dimension on the color part surface of the zirconia ceramics of the present embodiment
Family name's hardness is shown in Table 1.
L, a and b value of the chrominance section of the zirconia ceramics of the present embodiment are tested using color difference meter, wherein b value it is absolute
Value is bigger, and chrominance section is more blue, i.e., color is deeper, and L, a and b value of the chrominance section of the zirconia ceramics of the present embodiment are shown in Table 2.
Embodiment 2
The preparation process of the mobile phone backboard of the present embodiment is as follows:
(1) ball milling mixing 4 on planetary ball mill are added in ball grinder in zirconium oxide, inorganic colourant, sintering aid and water
Hour, revolving speed when ball milling is 200 revs/min, obtain slurry, wherein the mass ratio of zirconium oxide and inorganic colourant is 80:
20, inorganic colourant is tin oxide, calcium carbonate, chrome green and erbium oxide, tin oxide, calcium carbonate, chrome green and oxygen
The mass ratio for changing erbium is 5:0.6:0.2:0.4；The mass ratio of sintering aid and zirconium oxide is 0.8:180, and sintering aid is by aluminium oxide, carbon
Sour lithium and boron oxide composition, and the mass ratio of aluminium oxide, lithium carbonate and boron oxide is 8:1:1, zirconium oxide, inorganic colourant and is helped
Burn agent quality sum and ball-milling medium mass ratio be 1:1.5, the quality sum of zirconium oxide, inorganic colourant and sintering aid with
The mass ratio of water is 1:0.5；Then slurry is crossed 30 mesh screens to be filtered, is placed on stainless steel plate dry at 180 DEG C
Dry 3 hour, it is subsequently added into the aqueous solution for the polyvinyl alcohol that mass percentage is 10%, is granulated, obtains mixture,
In, the mass ratio of the aqueous solution of zirconium oxide, the quality sum of inorganic colourant and sintering aid and polyvinyl alcohol is 90:10.
(2) by mixture, progress in pressure maintaining 30 seconds is dry-pressing formed at 15MPa, obtains the coloring pottery of red 5 shape of number
Porcelain billet body.
(3) the aqueous solution mixing granulation for the polyvinyl alcohol for being 10% by Zirconium powder and mass percentage concentration, is mixed
Object is closed, through dry-pressing formed, obtains the zirconia ceramics green body of white, wherein in mixture, the quality percentage of Zirconium powder contains
Amount is 85%, the mass percentage 15% of the aqueous solution of polyvinyl alcohol.
(4) decorated ceramic body and the zirconia ceramics green body of white are laminated, and are sintered at 1400 DEG C, so that
Inorganic colourant in decorated ceramic body occurs atom diffusion and enters in zirconia ceramics green body, obtains being formed with red
The zirconia ceramics of digital 5 patterns, as shown in Figure 4.
(5) zirconia ceramics is polished, obtains mobile phone backboard.
The height and face for falling rupture of the zirconia ceramics of the present embodiment are obtained using the identical test method of embodiment
The surface Vickers hardness of color part is shown in Table 1.
Embodiment 3
The preparation process of the mobile phone backboard of the present embodiment is as follows:
(1) ball milling mixing 5 on planetary ball mill are added in ball grinder in zirconium oxide, inorganic colourant, sintering aid and water
Hour, revolving speed when ball milling is 300 revs/min, obtain slurry, wherein the mass ratio of zirconium oxide and inorganic colourant is 90:
10, inorganic colourant is praseodymium oxide, di-iron trioxide and silica, the quality of praseodymium oxide, di-iron trioxide and silica
Than for 2:3.5:0.25；The mass ratio of sintering aid and zirconium oxide is 1:200, and sintering aid is by aluminium oxide, lithium carbonate and boron oxide group
At, and the mass ratio of aluminium oxide, lithium carbonate and boron oxide is 8:1:1, the quality sum of zirconium oxide, inorganic colourant and sintering aid
Mass ratio with ball-milling medium is 1:2, and the mass ratio of zirconium oxide, the quality sum of inorganic colourant and sintering aid and water is 1:
0.8；Then slurry is crossed 30 mesh screens to be filtered, be placed on stainless steel plate 2 hours dry at 200 DEG C, then plus
The aqueous solution for entering the polyvinyl alcohol that mass percentage is 15%, is granulated, obtains mixture, wherein zirconium oxide, inorganic
The mass ratio of the aqueous solution of the quality sum and polyvinyl alcohol of toner and sintering aid is 85:15.
(2) by mixture, progress in pressure maintaining 30 seconds is dry-pressing formed at 20MPa, obtains coffee-like elliptical coloring pottery
Porcelain billet body.
(3) the aqueous solution mixing granulation for the polyvinyl alcohol for being 10% by Zirconium powder and mass percentage concentration, is mixed
Object is closed, through dry-pressing formed, obtains the zirconia ceramics green body of white, wherein in mixture, the quality percentage of Zirconium powder contains
Amount is 88%, the mass percentage 12% of the aqueous solution of polyvinyl alcohol.
(4) decorated ceramic body and the zirconia ceramics green body of white are laminated, and are sintered at 1450 DEG C, so that
Inorganic colourant in decorated ceramic body occurs atom diffusion and enters in zirconia ceramics green body, obtains being formed with coffee color
Oval logo zirconia ceramics, as shown in Figure 5.
(5) zirconia ceramics is polished, obtains mobile phone backboard.
The height and face for falling rupture of the zirconia ceramics of the present embodiment are obtained using the identical test method of embodiment 1
The surface Vickers hardness of color part is shown in Table 1.
Embodiment 4
The preparation process of the mobile phone backboard of the present embodiment is as follows:
(1) ball milling mixing 5 on planetary ball mill are added in ball grinder in zirconium oxide, inorganic colourant, sintering aid and water
Hour, revolving speed when ball milling is 300 revs/min, obtain slurry, wherein the mass ratio of zirconium oxide and inorganic colourant is 90:
10, inorganic colourant is chrome green；The mass ratio of sintering aid and zirconium oxide is 1:200, and sintering aid is by aluminium carbonate, lithia
And boron oxide composition, and the mass ratio of aluminium carbonate, lithia and boron oxide is 8:1:1, zirconium oxide, inorganic colourant and sintering aid
Quality sum and ball-milling medium mass ratio be 1:2, the matter of zirconium oxide, the quality sum of inorganic colourant and sintering aid and water
Amount is than being 1:0.8；Then slurry is crossed 30 mesh screens to be filtered, is placed on stainless steel plate small in 200 DEG C of dryings 2
When, it is subsequently added into the aqueous solution for the polyvinyl alcohol that mass percentage is 15%, is granulated, obtains mixture, wherein oxidation
The mass ratio of the aqueous solution of zirconium, the quality sum of inorganic colourant and sintering aid and polyvinyl alcohol is 88:12.
(2) by mixture, progress in pressure maintaining 30 seconds is dry-pressing formed at 20MPa, obtains the decorated ceramic body of green.
(3) the aqueous solution mixing granulation for the polyvinyl alcohol for being 10% by Zirconium powder and mass percentage concentration, is mixed
Object is closed, through dry-pressing formed, obtains the zirconia ceramics green body of white, wherein in mixture, the quality percentage of Zirconium powder contains
Amount is 88%, the mass percentage 12% of the aqueous solution of polyvinyl alcohol.
(4) decorated ceramic body and the zirconia ceramics green body of white are laminated, and are sintered at 1450 DEG C, so that
Inorganic colourant in decorated ceramic body occurs atom diffusion and enters in zirconia ceramics green body, obtains being formed with green figure
The zirconia ceramics of case.
(5) zirconia ceramics is polished, obtains mobile phone backboard.
The height and face for falling rupture of the zirconia ceramics of the present embodiment are obtained using the identical test method of embodiment 1
The surface Vickers hardness of color part is shown in Table 1.
Embodiment 5
The preparation process of the mobile phone backboard of the present embodiment is as follows:
(1) ball milling mixing 5 on planetary ball mill are added in ball grinder in zirconium oxide, inorganic colourant, sintering aid and water
Hour, revolving speed when ball milling is 300 revs/min, obtain slurry, wherein the mass ratio of zirconium oxide and inorganic colourant is 90:
10, inorganic colourant is neodymia；The mass ratio of sintering aid and zirconium oxide is 1:200, and sintering aid is by aluminium carbonate, aluminium oxide, oxygen
Change lithium and carbonic acid boron composition, and aluminium carbonate, aluminium oxide, lithia and carbonic acid boron mass ratio be 6:2:1:1, it is zirconium oxide, inorganic
The mass ratio of the quality sum and ball-milling medium of colorant and sintering aid is 1:2, the matter of zirconium oxide, inorganic colourant and sintering aid
The mass ratio of the sum of amount and water is 1:0.8；Then slurry 30 mesh screens are crossed to be filtered, be placed on stainless steel plate
200 DEG C drying 2 hours, be subsequently added into mass percentage be 15% polyvinyl alcohol aqueous solution, be granulated, mixed
Material, wherein the mass ratio of the aqueous solution of zirconium oxide, the quality sum of inorganic colourant and sintering aid and polyvinyl alcohol is 90:10.
(2) by mixture, progress in pressure maintaining 30 seconds is dry-pressing formed at 20MPa, obtains the decorated ceramic body of purple.
(3) the aqueous solution mixing granulation for the polyvinyl alcohol for being 10% by Zirconium powder and mass percentage concentration, is mixed
Object is closed, through dry-pressing formed, obtains the zirconia ceramics green body of white, wherein in mixture, the quality percentage of Zirconium powder contains
Amount is 88%, the mass percentage 12% of the aqueous solution of polyvinyl alcohol.
(4) decorated ceramic body and the zirconia ceramics green body of white are laminated, and are sintered at 1450 DEG C, so that
Inorganic colourant in decorated ceramic body occurs atom diffusion and enters in zirconia ceramics green body, obtains being formed with purple figure
The zirconia ceramics of case.
(5) zirconia ceramics is polished, obtains mobile phone backboard.
The height and face for falling rupture of the zirconia ceramics of the present embodiment are obtained using the identical test method of embodiment 1
The surface Vickers hardness of color part is shown in Table 1.
Embodiment 6
The preparation process of the mobile phone backboard of the present embodiment is as follows:
(1) ball milling mixing 5 on planetary ball mill are added in ball grinder in zirconium oxide, inorganic colourant, sintering aid and water
Hour, revolving speed when ball milling is 300 revs/min, obtain slurry, wherein the mass ratio of zirconium oxide and inorganic colourant is 90:
10, inorganic colourant is terbium oxide；The mass ratio of sintering aid and zirconium oxide be 1:200, sintering aid by aluminium oxide, lithium bicarbonate and
Boron oxide composition, and the mass ratio of aluminium oxide, lithium bicarbonate and boron oxide is 7:1.5:1.5, zirconium oxide, inorganic colourant and is helped
The mass ratio of the quality sum and ball-milling medium of burning agent is 1:2, the quality sum and water of zirconium oxide, inorganic colourant and sintering aid
Mass ratio be 1:0.8；Then slurry is crossed 30 mesh screens to be filtered, is placed on stainless steel plate at 200 DEG C dry 2
Hour, it is subsequently added into the aqueous solution for the polyvinyl alcohol that mass percentage is 15%, is granulated, obtains mixture, wherein oxygen
The mass ratio for changing the aqueous solution of the quality sum and polyvinyl alcohol of zirconium, inorganic colourant and sintering aid is 85:15.
(2) by mixture, progress in pressure maintaining 30 seconds is dry-pressing formed at 20MPa, obtains the decorated ceramic body of buff.
(3) the aqueous solution mixing granulation for the polyvinyl alcohol for being 10% by Zirconium powder and mass percentage concentration, is mixed
Object is closed, through dry-pressing formed, obtains the zirconia ceramics green body of white, wherein in mixture, the quality percentage of Zirconium powder contains
Amount is 88%, the mass percentage 12% of the aqueous solution of polyvinyl alcohol.
(4) decorated ceramic body and the zirconia ceramics green body of white are laminated, and are sintered at 1450 DEG C, so that
Inorganic colourant in decorated ceramic body occurs atom diffusion and enters in zirconia ceramics green body, obtains being formed with buff
The zirconia ceramics of pattern.
(5) zirconia ceramics is polished, obtains mobile phone backboard.
The height and face for falling rupture of the zirconia ceramics of the present embodiment are obtained using the identical test method of embodiment 1
The surface Vickers hardness of color part is shown in Table 1.
Embodiment 7
The preparation process of the mobile phone backboard of the present embodiment is as follows:
(1) ball milling mixing 5 on planetary ball mill are added in ball grinder in zirconium oxide, inorganic colourant, sintering aid and water
Hour, revolving speed when ball milling is 300 revs/min, obtain slurry, wherein the mass ratio of zirconium oxide and inorganic colourant is 90:
10, inorganic colourant is erbium oxide；The mass ratio of sintering aid and zirconium oxide be 1:200, sintering aid by aluminium carbonate, lithium bicarbonate,
Lithia and carbonic acid boron composition, and aluminium carbonate, lithium bicarbonate, lithia and carbonic acid boron mass ratio be 8:1:0.5:1, oxidation
The mass ratio of zirconium, the quality sum of inorganic colourant and sintering aid and ball-milling medium is 1:2, zirconium oxide, inorganic colourant and is helped
The mass ratio of the quality sum and water of burning agent is 1:0.8；Then slurry is crossed 30 mesh screens to be filtered, is placed in stainless steel disc
It is dried 2 hours on son at 200 DEG C, is subsequently added into the aqueous solution for the polyvinyl alcohol that mass percentage is 15%, is granulated,
Obtain mixture, wherein the mass ratio of the aqueous solution of zirconium oxide, the quality sum of inorganic colourant and sintering aid and polyvinyl alcohol
For 85:15.
(2) by mixture, progress in pressure maintaining 30 seconds is dry-pressing formed at 20MPa, obtains the decorated ceramic body of pink colour.
(3) the aqueous solution mixing granulation for the polyvinyl alcohol for being 10% by Zirconium powder and mass percentage concentration, is mixed
Object is closed, through dry-pressing formed, obtains the zirconia ceramics green body of white, wherein in mixture, the quality percentage of Zirconium powder contains
Amount is 88%, the mass percentage 12% of the aqueous solution of polyvinyl alcohol.
(4) decorated ceramic body and the zirconia ceramics green body of white are laminated, and are sintered at 1450 DEG C, so that
Inorganic colourant in decorated ceramic body occurs atom diffusion and enters in zirconia ceramics green body, obtains being formed with pink colour figure
The zirconia ceramics of case.
(5) zirconia ceramics is polished, obtains mobile phone backboard.
The height and face for falling rupture of the zirconia ceramics of the present embodiment are obtained using the identical test method of embodiment 1
The surface Vickers hardness of color part is shown in Table 1.
Embodiment 8
The preparation process of the mobile phone backboard of the present embodiment is as follows:
(1) ball milling mixing 5 on planetary ball mill are added in ball grinder in zirconium oxide, inorganic colourant, sintering aid and water
Hour, revolving speed when ball milling is 300 revs/min, obtain slurry, wherein the mass ratio of zirconium oxide and inorganic colourant is 90:
10, inorganic colourant is cerium oxide；The mass ratio of sintering aid and zirconium oxide is 1:200, and sintering aid is by aluminium carbonate, lithia, carbon
Sour hydrogen lithium, carbonic acid boron and boron oxide composition, and aluminium carbonate, lithia, lithium bicarbonate, carbonic acid boron and boron oxide mass ratio be 8:
1:0.5:0.5:1, the mass ratio of zirconium oxide, the quality sum of inorganic colourant and sintering aid and ball-milling medium are 1:2, oxidation
The mass ratio of zirconium, the quality sum of inorganic colourant and sintering aid and water is 1:0.8；Then slurry 30 mesh screens are crossed to carry out
Filter is placed on stainless steel plate and dries 2 hours at 200 DEG C, is subsequently added into the polyvinyl alcohol that mass percentage is 15%
Aqueous solution, be granulated, obtain mixture, wherein the quality sum and polyethylene of zirconium oxide, inorganic colourant and sintering aid
The mass ratio of the aqueous solution of alcohol is 85:15.
(2) by mixture, progress in pressure maintaining 30 seconds is dry-pressing formed at 20MPa, obtains the decorated ceramic body of ecru.
(3) by Zirconium powder and paraffin, organic additive mixing resulting mixture, by mixture pelleting, and in injection molding machine
Middle molding obtains oxide ceramic green body.Wherein, in mixture, the mass percentage of Zirconium powder is 88%, the matter of paraffin
Measuring percentage composition is 7%, and the mass percentage of organic additive is 5%；Organic additive is by polyethylene, stearic acid and adjacent benzene
Dicarboxylic acid dimethyl ester composition, the mass ratio of polyethylene, stearic acid and repefral are 1:0.6:0.15.
(4) decorated ceramic body and the zirconia ceramics green body of white are laminated, and are sintered at 1450 DEG C, so that
Inorganic colourant in decorated ceramic body occurs atom diffusion and enters in zirconia ceramics green body, obtains being formed with ecru
The zirconia ceramics of pattern.
(5) zirconia ceramics is polished, obtains mobile phone backboard.
The height and face for falling rupture of the zirconia ceramics of the present embodiment are obtained using the identical test method of embodiment 1
The surface Vickers hardness of color part is shown in Table 1.
Embodiment 9
The preparation process of the mobile phone backboard of the present embodiment is as follows:
(1) ball milling mixing 5 on planetary ball mill are added in ball grinder in zirconium oxide, inorganic colourant, sintering aid and water
Hour, revolving speed when ball milling is 300 revs/min, obtain slurry, wherein the mass ratio of zirconium oxide and inorganic colourant is 90:
10, inorganic colourant is cobalt oxide；The mass ratio of sintering aid and zirconium oxide is 1:200, and sintering aid is by aluminium carbonate, lithia and oxygen
Change boron composition, and the mass ratio of aluminium carbonate, lithia and boron oxide is 7:1.5:1.5, zirconium oxide, inorganic colourant and sintering aid
Quality sum and ball-milling medium mass ratio be 1:2, the matter of zirconium oxide, the quality sum of inorganic colourant and sintering aid and water
Amount is than being 1:0.8；Then slurry is crossed 30 mesh screens to be filtered, is placed on stainless steel plate small in 200 DEG C of dryings 2
When, it is subsequently added into the aqueous solution for the polyvinyl alcohol that mass percentage is 15%, is granulated, obtains mixture, wherein oxidation
The mass ratio of the aqueous solution of zirconium, the quality sum of inorganic colourant and sintering aid and polyvinyl alcohol is 85:15.
(2) by mixture, progress in pressure maintaining 30 seconds is dry-pressing formed at 20MPa, obtains navy blue decorated ceramic body.
(3) by Zirconium powder and paraffin, organic additive mixing resulting mixture, by mixture pelleting, and in injection molding machine
Middle molding obtains oxide ceramic green body.Wherein, in mixture, the mass percentage of Zirconium powder is 85%, the matter of paraffin
Measuring percentage composition is 8%, and the mass percentage of organic additive is 7%；Organic additive is by polyethylene, stearic acid and adjacent benzene
Dicarboxylic acid dimethyl ester composition, the mass ratio of polyethylene, stearic acid and repefral are 1:0.6:0.15.
(4) decorated ceramic body and the zirconia ceramics green body of white are laminated, and are sintered at 1400 DEG C, so that
Inorganic colourant in decorated ceramic body occurs atom diffusion and enters in zirconia ceramics green body, obtains being formed with navy blue
The zirconia ceramics of pattern.
(5) zirconia ceramics is polished, obtains mobile phone backboard.
The height and face for falling rupture of the zirconia ceramics of the present embodiment are obtained using the identical test method of embodiment 1
The surface Vickers hardness of color part is shown in Table 1.
Embodiment 10
The preparation process of the mobile phone backboard of the present embodiment is as follows:
(1) ball milling mixing 5 hours, ball on planetary ball mill is added in ball grinder in zirconium oxide, inorganic colourant and water
Revolving speed when mill is 250 revs/min, obtains slurry, wherein the mass ratio of zirconium oxide and inorganic colourant is 85:15, inorganic
Toner is cobalt oxide, and the mass ratio of the quality sum and ball-milling medium of zirconium oxide and inorganic colourant is 1:2, zirconium oxide and inorganic
The quality sum of colorant and the mass ratio of water are 1:0.6；Then slurry is crossed 30 mesh screens to be filtered, is placed in stainless steel
It is dried 2 hours on plate at 200 DEG C, is subsequently added into the aqueous solution for the polyvinyl alcohol that mass percentage is 15%, is made
Grain, obtains mixture, wherein the mass ratio of the aqueous solution of zirconium oxide and inorganic colourant quality sum and polyvinyl alcohol is 85:
15。
(2) by mixture, progress in pressure maintaining 30 seconds is dry-pressing formed at 18MPa, is prepared into the decorated ceramic body of A word shape.
(3) the aqueous solution mixing granulation for the polyvinyl alcohol for being 10% by Zirconium powder and mass percentage concentration, is mixed
Object is closed, through dry-pressing formed, obtains the zirconia ceramics green body of white, wherein in mixture, the quality percentage of Zirconium powder contains
Amount is 88%, the mass percentage 12% of the aqueous solution of polyvinyl alcohol.
(4) decorated ceramic body and the zirconia ceramics green body of white are laminated, and are sintered at 1450 DEG C, so that
Inorganic colourant in decorated ceramic body occurs atom diffusion and enters in zirconia ceramics green body, obtains being formed with blue A
The zirconia ceramics of word style and pattern.
(5) zirconia ceramics is polished, obtains mobile phone backboard.
The height and face for falling rupture of the zirconia ceramics of the present embodiment are obtained using the identical test method of embodiment 1
The surface Vickers hardness of color part is shown in Table 1, and L, a and b value of chrominance section are shown in Table 2.
Embodiment 11
The preparation process of the mobile phone backboard of the present embodiment is as follows:
(1) ball milling mixing 5 on planetary ball mill are added in ball grinder in zirconium oxide, inorganic colourant, sintering aid and water
Hour, revolving speed when ball milling is 250 revs/min, obtain slurry, wherein the mass ratio of zirconium oxide and inorganic colourant is 85:
15, inorganic colourant is cobalt oxide；The mass ratio of sintering aid and zirconium oxide be 0.9:190, sintering aid by aluminium oxide, lithia and
Boron oxide composition, and the mass ratio of aluminium oxide, lithia and boron oxide is 7:1.5:1.5, zirconium oxide, inorganic colourant and helps burning
The mass ratio of the quality sum of agent and ball-milling medium is 1:2, zirconium oxide, the quality sum of inorganic colourant and sintering aid and water
Mass ratio is 1:0.6；Then slurry is crossed 30 mesh screens to be filtered, is placed on stainless steel plate small in 190 DEG C of dryings 2.5
When, it is subsequently added into the aqueous solution for the polyvinyl alcohol that mass percentage is 12%, is granulated, obtains mixture, wherein oxidation
The mass ratio of the aqueous solution of zirconium, the quality sum of inorganic colourant and sintering aid and polyvinyl alcohol is 85:15.
(2) by mixture, progress in pressure maintaining 30 seconds is dry-pressing formed at 18MPa, is prepared into the decorated ceramic body of A word shape.
(3) the aqueous solution mixing granulation for the polyvinyl alcohol for being 10% by Zirconium powder and mass percentage concentration, is mixed
Object is closed, through dry-pressing formed, obtains the zirconia ceramics green body of white, wherein in mixture, the quality percentage of Zirconium powder contains
Amount is 88%, the mass percentage 12% of the aqueous solution of polyvinyl alcohol.
(4) decorated ceramic body and the zirconia ceramics green body of white are laminated, and are sintered at 1450 DEG C, so that
Inorganic colourant in decorated ceramic body occurs atom diffusion and enters in zirconia ceramics green body, obtains being formed with blue A
The zirconia ceramics of word style and pattern.
(5) zirconia ceramics is polished, obtains mobile phone backboard.
The height and face for falling rupture of the zirconia ceramics of the present embodiment are obtained using the identical test method of embodiment 1
The surface Vickers hardness of color part is shown in Table 1, and L, a and b value of chrominance section are shown in Table 2.
Comparative example 1
The preparation step of the mobile phone backboard of comparative example 1 is as follows:
(1) the aqueous solution mixing granulation for the polyvinyl alcohol for being 10% by Zirconium powder and mass percentage concentration, is mixed
Object is closed, through dry-pressing formed, obtains the zirconia ceramics green body of white, the mass percentage of Zirconium powder is 88%, poly- second
The mass percentage 12% of the aqueous solution of enol.
(2) the zirconia ceramics green body of white is sintered at 1450 DEG C, and reaches standard size by processing and wants
It asks.
(3) glaze with oxidation cobalt colorant is printed in the table of zirconia ceramics backboard by way of silk-screen printing
Face after drying, is sintered at 900 DEG C.
(4) zirconia ceramics is polished, obtains mobile phone backboard.
The height and face for falling rupture of the zirconia ceramics of comparative example 1 are obtained using the identical test method of embodiment 1
The surface Vickers hardness of color part is shown in Table 1.
Comparative example 2
The preparation step of the mobile phone backboard of comparative example 2 is as follows:
(1) ball milling mixing 5 on planetary ball mill are added in ball grinder in zirconium oxide, inorganic colourant, sintering aid and water
Hour, revolving speed when ball milling is 250 revs/min, obtain slurry, wherein the mass ratio of zirconium oxide and inorganic colourant is 85:
15, inorganic colourant is cobalt oxide；The mass ratio of sintering aid and zirconium oxide be 0.9:190, sintering aid by aluminium oxide, lithium carbonate and
Boron oxide composition, and the mass ratio of aluminium oxide, lithium carbonate and boron oxide is 7:1.5:1.5, zirconium oxide, inorganic colourant and helps burning
The mass ratio of the quality sum of agent and ball-milling medium is 1:2, zirconium oxide, the quality sum of inorganic colourant and sintering aid and water
Mass ratio is 1:0.6；Then slurry is crossed 30 mesh screens to be filtered, is placed on stainless steel plate small in 190 DEG C of dryings 2.5
When.
(2) the aqueous solution mixing granulation for the polyvinyl alcohol for being 10% by Zirconium powder and mass percentage concentration, is mixed
Object is closed, through dry-pressing formed, obtains zirconia ceramics green body, wherein in mixture, the mass percentage of Zirconium powder is
88%, the mass percentage 12% of the aqueous solution of polyvinyl alcohol.
(3) the chromatic ceramics green body containing colorant is sintered at 1450 DEG C.
(4) colored zirconia ceramics are polished, obtains mobile phone backboard.
The height and face for falling rupture of the zirconia ceramics of comparative example 2 are obtained using the identical test method of embodiment 1
The surface Vickers hardness of color part is shown in Table 1.
Comparative example 3
The preparation step of the zirconia ceramics of comparative example 3 is as follows:
By the aqueous solution mixing granulation for the polyvinyl alcohol that Zirconium powder and mass percentage concentration are 10%, mixed
Object obtains the zirconia ceramics green body of white through dry-pressing formed, wherein in mixture, the mass percentage of Zirconium powder
It is 88%, the mass percentage 12% of the aqueous solution of polyvinyl alcohol.
Zirconia ceramics base is sintered at 1450 DEG C, obtains zirconia ceramics.
The height and face for falling rupture of the zirconia ceramics of comparative example 3 are obtained using the identical test method of embodiment 1
The surface Vickers hardness of color part is shown in Table 1.
Comparative example 4
The preparation step of the zirconia ceramics of comparative example 4 is as follows:
By Zirconium powder and paraffin, organic additive mixing resulting mixture, by mixture pelleting, and in injection molding machine at
Type obtains oxide ceramic green body.Wherein, in mixture, the mass percentage of Zirconium powder is 85%, the quality hundred of paraffin
Dividing content is 8%, and the mass percentage of organic additive is 7%；Organic additive is by polyethylene, stearic acid and O-phthalic
Dimethyl phthalate composition, the mass ratio of polyethylene, stearic acid and repefral are 1:0.6:0.15.
Zirconia ceramics base is sintered at 1450 DEG C, obtains zirconia ceramics.
The height and face for falling rupture of the zirconia ceramics of comparative example 4 are obtained using the identical test method of embodiment 1
The surface Vickers hardness of color part is shown in Table 1.
What table 1 indicated is the height and color for falling rupture of the zirconia ceramics of Examples 1 to 10 and comparative example 1~4
Partial surface Vickers hardness.
Table 1
From table 1 it follows that the height for falling rupture of the zirconia ceramics of Examples 1 to 10 preparation is above comparison
The zirconia ceramics of example 1 and comparative example 2, i.e. Examples 1 to 10 preparation has more better than comparative example 1 and comparative example 2 mechanical strong
Degree.
It can also be seen that embodiment 1~implementation 7 and embodiment 10 are obtained using dry-pressing formed method from table 1
The height for falling rupture of the zirconia ceramics of the height for falling rupture and comparative example 3 of zirconia ceramics is consistent, and is implemented
The oxidation of the height for falling rupture and comparative example 4 of the zirconia ceramics that the method that example 8 and embodiment 9 use injection molding obtains
The height for falling rupture of zircon ceramic be it is consistent, this explanation is by forming method that decorated ceramic body is dyed to zirconium oxide
The mechanical strength of ceramics almost influences；And the dry-pressing formed method of use obtains the embodiment 1~implementation 7 and reality of zirconia ceramics
It applies the bright embodiment 8 for being higher than the zirconia ceramics obtained using the method for injection molding of the height for falling rupture of example 8 and implements
Example 9, this explanation is dry-pressing formed can to make zirconia ceramics have good mechanical strength.
Although it can also be seen that the table of the color part of the zirconia ceramics of Examples 1 to 7 and embodiment 10 from table 1
Face Vickers hardness is slightly below the zirconia ceramics of comparative example 3, and the color part of 9 zirconia ceramics of embodiment 8 and embodiment
Surface Vickers hardness be slightly below the zirconia ceramics of comparative example 4, but the color portion of the zirconia ceramics of Examples 1 to 10
The surface Vickers hardness divided but is significantly larger than comparative example 1 and comparative example 2, this illustrates the formation colored ceramic base of Examples 1 to 10
The method that body is dyed influences the wear-resisting property of zirconia ceramics smaller, and the comparative example 1 of glazing and directly adds inorganic
The comparative example 2 of colorant can seriously reduce its wear-resisting property.
That table 2 indicates is L, a and b of the chrominance section of the zirconia ceramics of embodiment 1, embodiment 10 and embodiment 11
Value.
Table 2
| L | a | b | |
| Embodiment 1 | 28.54 | 2.85 | -43.52 |
| Embodiment 10 | 32.63 | 3.04 | -39.88 |
| Embodiment 11 | 30.44 | 2.95 | -41.56 |
From Table 2, it can be seen that the maximum absolute value of the b value of the chrominance section of the zirconia ceramics of embodiment 1, is greater than real
Example 10 and embodiment 11 are applied, and the absolute value of the b value of the chrominance section of the zirconia ceramics of embodiment 10 is minimum, this illustrates to add
Sintering aid can increase the diffusion of inorganic colourant, improve dyeing effect, and carbonate can further increase inorganic colourant
Diffusion, improve dyeing effect, this is because will form diffusion admittance after carbonate decomposition, in order to which inorganic colourant passes through expansion
Scattered channel diffuses out, and improves dyeing effect.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (9)
1. a kind of preparation method of zirconia ceramics, which comprises the steps of:
Mixture is formed, decorated ceramic body is obtained, wherein the mixture includes that mass ratio is 80~90:10~20
Zirconium oxide and inorganic colourant；
Zirconia ceramics green body is provided, the decorated ceramic body and the zirconia ceramics green body are laminated, and temperature not
It is sintered at the temperature at which atom diffusion takes place lower than the inorganic colourant, so that in the decorated ceramic body
The inorganic colourant diffuses into the zirconia ceramics green body, obtains zirconia ceramics；
The mixture further includes sintering aid, and the sintering aid includes decomposable salt, and the decomposable salt is selected from carbonate
And at least one of bicarbonate, and the decomposition temperature of the decomposable salt is less than the inorganic colourant and original takes place
The temperature of son diffusion.
2. the preparation method of zirconia ceramics according to claim 1, which is characterized in that the inorganic colourant starts to send out
The temperature of raw atom diffusion is no more than 1400 DEG C, and the temperature when sintering is 1400 DEG C~1450 DEG C.
3. the preparation method of zirconia ceramics according to claim 1, which is characterized in that the decomposition of the decomposable salt
Temperature is no more than 1200 DEG C.
4. the preparation method of zirconia ceramics according to claim 1, which is characterized in that the sintering aid include silicon source,
Lithium source and boron source, source of aluminium be selected from least one of aluminium oxide and aluminium carbonate, the lithium source be selected from lithia, lithium carbonate and
At least one of lithium bicarbonate, the boron source are selected from least one of boron oxide and carbonic acid boron；Wherein, the carbonate choosing
From at least one of the aluminium carbonate, the lithium carbonate and described carbonic acid boron, the bicarbonate is the lithium bicarbonate.
5. the preparation method of zirconia ceramics according to claim 1, which is characterized in that the sintering aid and the oxidation
The mass ratio of zirconium is 0.8~1:180~200.
6. the preparation method of zirconia ceramics according to claim 1, which is characterized in that further include the system of the mixture
Standby step: adding water for ball milling to mix the zirconium oxide, the inorganic colourant and the sintering aid, then successively through drying and makes
Grain, obtains the mixture；Wherein, when ball milling, the quality sum of the zirconium oxide, the inorganic colourant and the sintering aid
Mass ratio with ball-milling medium is 1:1.5~2, the quality sum of the zirconium oxide, the inorganic colourant and the sintering aid
Mass ratio with the water is 1:0.5~0.8.
7. zirconia ceramics prepared by a kind of preparation method of zirconia ceramics as described in claim 1~6 any one.
8. a kind of preparation method of mobile phone backboard, which comprises the steps of:
Zirconia ceramics is prepared according to the preparation method of the zirconia ceramics as described in claim 1~6 any one；
The zirconia ceramics is processed, mobile phone backboard is obtained.
9. mobile phone backboard prepared by a kind of preparation method of mobile phone backboard as claimed in claim 8.
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| CN108546117B (en) | 2018-04-24 | 2021-08-03 | 北京小米移动软件有限公司 | Ceramic shell, mobile terminal and manufacturing method of ceramic shell |
| CN108947539B (en) * | 2018-09-11 | 2021-05-25 | 中国科学院上海硅酸盐研究所 | Silicon nitride ceramic material for mobile phone back plate and preparation method thereof |
| CN109956747B (en) * | 2019-05-05 | 2020-09-08 | 山东国瓷功能材料股份有限公司 | Red zirconia sintered body, preparation method and application |
| CN111704456A (en) * | 2020-07-07 | 2020-09-25 | 徐强 | 5G mobile phone cover plate and preparation method thereof |
| CN111848159A (en) * | 2020-07-30 | 2020-10-30 | 山东东大新材料研究院有限公司 | Preparation method of yellow conductive zirconia ceramic |
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